Documentation
CalculationCenter
Functions
Lists & Matrices
List Manipulation
Select
Select[list, crit] picks out all elements ei of list for which crit[ei] is True.
Select[list, crit, n] picks out the first n elements for which crit[ei] is True.

Examples
Using InstantCalculators
Here is an InstantCalculator for the Select function. Enter the parameters for your calculation and click Calculate to see the result.
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This InstantCalculator enables you to select elements of a matrix that meet a specified condition. Enter the parameters for your calculation and click Calculate to see the result.
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Entering Commands Directly
You can paste a template for this command via the Text Input button on the Select Function Controller.
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